adjective
obtuse
Having an angle greater than 90 degrees but less than 180 degrees.
An obtuse angle is wider than a right angle.
Etymology
Latin obtusus means blunted. Geometry uses that bluntness for an angle wider than a right angle, contrasting with the sharpness of an acute angle.
More examples
- The triangle had one obtuse angle.
- She opened the hinged arms to an obtuse angle.
- The diagram marked the obtuse angle in blue.
Forms
obtuse · more obtuse · most obtuse